How severe is CVE-2019-18379?

CVE-2019-18379 has a CVSS 3.x base score of 7.3, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.

Is CVE-2019-18379 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (64th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-18379?

CVE-2019-18379 affects Symantec Messaging Gateway. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2019-18379?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2019-18379 published?

CVE-2019-18379 was published on 2019-12-11 and last updated on 2026-06-17.

CVE-2019-18379

CVE-2019-18379 is a high-severity vulnerability in Symantec Messaging Gateway with a CVSS 3.x base score of 7.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-918.

Key facts

Severity: High (CVSS 3.x base score 7.3)
CVSS v2: 7.5
EPSS exploit prediction: 1% (64th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-918
Affected product: Symantec Messaging Gateway
Published: 2019-12-11
Last modified: 2026-06-17

Description

Symantec Messaging Gateway, prior to 10.7.3, may be susceptible to a server-side request forgery (SSRF) exploit, which is a type of issue that can let an attacker send crafted requests from the backend server of a vulnerable web application or access services available through the loopback interface.

Frequently asked questions

What is CVE-2019-18379?: Symantec Messaging Gateway, prior to 10.7.3, may be susceptible to a server-side request forgery (SSRF) exploit, which is a type of issue that can let an attacker send crafted requests from the backend server of a vulnerable web application or access services available through the loopback interface.
How severe is CVE-2019-18379?: CVE-2019-18379 has a CVSS 3.x base score of 7.3, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.
Is CVE-2019-18379 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (64th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-18379?: CVE-2019-18379 affects Symantec Messaging Gateway. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2019-18379?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2019-18379 published?: CVE-2019-18379 was published on 2019-12-11 and last updated on 2026-06-17.

References

https://support.symantec.com/us/en/article.SYMSA1501.html

Affected products (1)

cpe:2.3:a:symantec:messaging_gateway:*:*:*:*:*:*:*:*

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